Apparatus for the extraction of zinc.



No. 775,359. PATBNTED NOV. 22, 1904. G. S. BRAND.

APPARATUS FOR THE EXTRACTION 0P ZINC.

APPLICATION FILED FEB. e. 1904.

N0 MODEL.

mnrwassas /N VENT-0F? A lwvwr'Braw/d No. 775,359. Patented November 22, 19,04.

TJNTTED STATES PATENT Trice.

CHARL 1S SKINNER BRAND, OF KNOW'LE, ENGLAYD.

APPARATUS FOR THE EXTRACTION OF ZINC.

SPECIFICATION forming part of Letters Patent No. 775,359, dated November 22, 1904.

Application filed February 6, 1904. Serial No. 192,432. No model.

T (4Z7 it y 60/0067! tions of the nozzles are supported by any well- 5 Be it known that 1, CHARLES SKINNER known means. BRAND, a SLlbJ6Cl) of the King of Great Britain The rear or retort end of the nozzle (1 has and Ireland, residing at Gladstone Road, Dorits under surface inclined toward its perforidge, Knowle, in the county of "arwick, rated extremity (7, and within such end is England, have invented certain new and useplaced the mass of refractory material, as a. :ful Improvements Relating to Apparatus for The said refractory mass may consistof broken the Extraction of Zinc, (for which I have filed fire-clay crucibles.

an application in Great Britain, No. 263, bear- The interior of the nozzles in advance of the 10 mg date January 5, 1904,) of which the folsaid refractory mass forms the condensmglowing 1s a specification. chamber f for the zinc-vapors. A collectmg- It is well known that ordinary commercial pocket, as g, is provided beneath the said conzinc or spelter contains a considerable admixdensing-chamber portionf for the reception ture of lead, amounting in some instances to of the molten zinc. Suitable apertures, as 71,

I5 as much as two or even three per cent, which are provided in the division-wall to allow renders it useless for many services. It is also the metal to flow from the condensing-cham- 5 well known that in the extraction of zinc very her to the collecting-pocket. The metal is great difficulty is experienced in obtaining the withdrawn from the pocket by way of the said metal free from such admixture of lead. clay-stoppered aperture at j. During work- 20 Apparatus is now in use with which the zincing the forward or outer extremity of the nozvapors are caused to pass through incandeszle is partially closed by clay, as Z. 7

cent carbon, placed either in the retort itself The zinc-vapors produced in the retort or or in a special form of nozzle or condensingdistilling-chamber in the well-known manpipe; but I have found that such employment ner pass through the upper apertures in the of carbon is unnecessary, costly, and does not extremity (Z of the nozzle or condensing-pipe yield the best results. u; but before obtaining access to the con- My invention comprises the separation of densing chamber or area f the vapors must the lead from the zinc-vapors by means of a pass through the mass of refractory material filter-bed or the like composed of broken clay a, which arrests and throws down the lead 30 crucibles or other chemically-inert non-combrought in with the zinc-vapors, while a1lo\ hustible or refractory material. ing the latter to pass through to the con- Referring to the accompanying sheet of exdensing chamber or area. The lead which is planatory drawings, Figure 1 is a sectional thus arrested and separated from the zinc-vaside elevation representing the application of pors flows back into the retort by way of the 3 5 my invention by the placing of the filter of lower aperture in the extremity (Z of the nozrefractory material within the nozzles or conzle or condensing-pipe r4. 3 5 (lensing-pipes of the retorts ordistilling-cham- I sometimes place the mass of refractory hers. Fig. 2 is an end view of the nozzle or material within the retort itself instead of in condensing-pipe shown at Fig. 1. the nozzle or condensing-pipe.

+ The same reference-letters in the two views Having thus described my invention, what indicate the same parts. I claim as new, and desire to secure by Letters The nozzle or condensing-pipe a is luted in Patent, is--- the mouth of the retort or distilling-chamber 1. The combination with means for the ex- /),according to the well-known practice in zinc l traction of zinc, of the condensing-chamber,

45 smelting. A series of such retorts, each hav- 1 the passage connecting the means for extracing a nozzle or condensing-pipe luted therein, 1 tion of zinc with the condensing-chamber and is arranged in the ordinarymanner within the 1 a mass of chemically-inert and refractory or furnace 0, whereby the heating of the retorts l non-combustible material in said passage, subis effected. The outwardly-projecting porl stantially as described.

2. 1n the extraction of 21110, the combina- I retort, a condensing-chamber in advance of tion consisting of a retort or distilling-chamthe said filter-bed of refractory material, and her, a nozzle or condensing-pipe inserted in a collecting-pocket beneath and communicat- 5 the mouth of the said retort, and a mass of ing with the said condensing-chamber, as set 5 chemically-inert and refractory material in forth.

the retort end of the said nozzle through In witness whereof I have hereunto set my which the said vapors are caused to pass behand in presence of two witnesses. fore conc ensation as set forth. m 7 1 r 3. 1n the extraction of zinc, the combina- (JHARLEb SkINNER BRAND IO tion with a retort or distilling-chamber, of a \Vitnesses:

filter-bed of chemically-inert and refractory EDWARD MARKS, material arranged at the mouth of the said JOHN MORGAN. 

